Coke-oven door



(No Model.)

J. J. DAVIS.

COKE OVEN DOOR. No. 374,942.. Patented Dec. 20, 188,7.

WITNEssEs: INVENTUR f C16/W55 f /fV/W F@ MW y ATTORNEYS.

UNITED STATES PATENT OFFICE.

JOHN J. DAVIS, OF TIOGA, PENNSYLVANIA.

COKE-OVEN DOOR.

SPECIFICATION forming part of Letters Patent No. 374,942, dated December 20, 1887.

(No model.)

To all whom, it may concern.-

Beit known that I, JOHN J. Davis, of Tioga, in the county of Tioga, in the State of Penn- Sylvania,A have invented new and useful Improvements in Coke-Oven Doors, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

It is the general custom to close the doors of cokeovens by means of a fire-brick wall built removably across the door and against the jambs thereof, and in some instances an iron door is hinged to an iron frame secured to the jambs of the opening of the oven, and a rebrick lining is built up at the inside of the iron door to protect the same from the heat of the replaced and made tight by plastering.

coal in process of being converted into coke.

Such methods and means for closing the doors of coke-ovens have several defects, of which may be mentioned the following: In bricking up the opening of the oven and plastering the said brick-work requires considerable time and labor, and in tearing down the brick-work and drawing the coke out of the oven more or less ofthe plaster becomes mixed with the coke, and thus impairs the commercial valve of the same. When it is required to admit air over the coal in process of coking, perforations have to be made in the wall laid up as aforesaid by removing one or more of the bricks or pieces of brick from the upper portion of said-wall, and subsequently to be All this occupies considerable time. Metallic doors, which are designed to obviate this latter defect, have their upper parts provided with ports and removable gates or stoppersover the ports; but said parts of the door are exposed to the heat from the interior of the oven, and are thus liable to become warped and burned. Furthermore, the brick lining of the metallic door, aswell as the brick wall aforesaid, allow the coal in the oven to come too near to the door at the base thereof, so that more or less of the coal at that locality is imperfectly coked. Aside from this, the construction of the hinged door withits ports and dampers or gates and the attachment of said door to the cokeoven are very expensive.

My invention is designed to obviate all of the aforesaid defects and objections; and to that end it consists in the improved means for as hereinafter fully described, and specifically set forth in the claims.

ln the annexed drawings, Figurel is a front elevation of a coke-oven door embodying my improvements. Fig. 2 is a vertical transverse section of the same. Fig. 3 is a horizontal transverse section on line .fr m, Fig. l; and Flg. 4 is a detached perspective View of the plate which closes the main portion of the door of the coke-oven.

`Similar letters of reference indicate corresponding parts.

O denotes the coke oven, and D the opening through which to remove the coke. This opening I close during the coking process by the following improved devices: Upon the bottom of said openinglmounta metallic plate, A, which is separate and detached from the oven, and is formed with a horizontal outwardlyprojecting base, a, by which it is supported in an upright position. Said plate extends completely across the opening, so as to abut agalnst the jambs thereof, and extends from the bottom of the opening part way the height thereof, or nearly to the chord or spring line ofthe arch over the opening D. The top of the plate A is formed with an outwardly projecting ledge, b, and in order to strengthen the plate I provide it with vertical ribs c c.

C represents a metal shelf which projects outward from the top of the plate A, and, if desired, may be cast in one piece therewith; but for convenience of manipulating the said parts I prefer to form the shelf of a separate plate, which rests with its inner edge on top of the ledge b, and is supported at its outer edge adjustably in its elevation by a suitable prop, P, as best seen in Fig. 2 of the drawings. The opening Dis to be closed before the oven is charged with coal, and in closing said opening I first place the plate Ain its hereinbefore-described position and deposit against the inner side thereof a bank of ashes or other analogous loose refractory material, as represented at I in Fig. 2 of the drawings, and close the opening over the top of the plate Aby piling ashes or other suitable analogous material onto the shelf G, to reach to the crown of the arch over the opening D. 'Vhenever it becomes necessary to admit air into-the oven, the ashes on the shelf can be depressed or suf closing the dischargeopenings of coke ovens,

IOO

ciently removed at the top to produce the requisite opening thereat, and this opening can be readily closed by replacing the removed ashes. The bank of ashes against the inner side of the plateAserves to protect said plate from the heat of the coal in the process of coking, and at the same time keeps the coal asufiicient distance from the door to allow lthe air, which is admitted through the opening above the shelf C, as aforesaid, to circulate across the top of the coal nearest the door, thus insuring perfect coking of all thecoal in the oven.

It will be observed that by means of the plate A aud shelf C, with the banks of ashes deposited on said parts, as herein described, I obtain a coke-oven door which is very simple in its construction, and also simple, convenient, durable, and effcctivein its operation.

Having described my inventiomwhat I claim as new, and desire to secure by Letters Patent, 1s-

1. The combination, With a coke-oven, of the door-plate A, seated .removably on the bottom of the dischargeopening of the oven 2. The combination, With a coke-oven, of 3o the plate A, seated removably on the bottom of the discharge opening of the oven and formed With the base a, top ledge, b, and ribs c c, the shelf C, supported with its inner edge removable on the ledge I), andf-the prop P, supporting the shelf at its outer edge adjustably in its angle ofinclination, substantially as described and shown.

In testimony whereof I have hereunto signed my name and affixed my seal, in the presence of two attcsting Witnesses, at Tioga, in the county of rIioga, inthe State of Pennsylvania, this 13th day of June, 1887.

JOHN J. Davis'. [L s] lfitnesses:

D. J. MURDocK, DANIEL WILKINs.' 

